<?php //$id:$
/**
* Defines the OpenofficeDocument class, which is meant as a conversion
* tool from Office text documents (.doc, .sxw, .odt, .docx) to
* learning paths
* @package dokeos.learnpath
* @author Eric Marguin <eric.marguin@dokeos.com>
* @license GNU/GPL - See Doke
/**
* Defines the "OpenofficeText" child of class "learnpath"
* @package dokeos.learnpath.OpenofficeDocument
*/
require_once('openoffice_document.class.php');
if (api_get_setting('search_enabled')=='true') {
require_once(api_get_path(LIBRARY_PATH) . 'specific_fields_manager.lib.php');
require_once(api_get_path(LIBRARY_PATH).'search/DokeosIndexer.class.php');
require_once(api_get_path(LIBRARY_PATH).'search/IndexableChunk.class.php');
}
class OpenofficeText extends OpenofficeDocument {
public $split_steps;
/**
* Class constructor. Calls the parent class and initialises the local attribute split_steps
* @param boolean Whether to split steps (true) or make one large page (false)
* @param string Course code
* @param integer Resource ID
* @param integer Creator user id
* @return void
*/
function OpenofficeText($split_steps=false, $course_code=null, $resource_id=null,$user_id=null)
{
$this -> split_steps = $split_steps;
parent::OpenofficeDocument($course_code, $resource_id, $user_id);
}
/**
* Gets html pages and compose them into a learning path
* @param array The files that will compose the generated learning path. Unused so far.
* @return boolean False if file does not exit. Nothing otherwise.
*/
function make_lp($files=array())
{
global $_course;
// we get a content where ||page_break|| indicates where the page is broken
if(!file_exists($this->base_work_dir.'/'.$this->created_dir.'/'.$this->file_name.'.html')){return false;}
$content = file_get_contents($this->base_work_dir.'/'.$this->created_dir.'/'.$this->file_name.'.html');
unlink($this->base_work_dir.'/'.$this->file_path);
unlink($this->base_work_dir.'/'.$this->created_dir.'/'.$this->file_name.'.html');
// the file is utf8 encoded and it seems to make problems with special quotes.
// then we htmlentities that, we replace these quotes and html_entity_decode that in good charset
$charset = api_get_setting('platform_charset');
$content = api_htmlentities($content,ENT_COMPAT,$this->original_charset);
$content = str_replace('’','\'',$content);
$content = api_convert_encoding($content, $charset, $this->original_charset);
$content = str_replace($this->original_charset,$charset,$content);
$content = api_html_entity_decode($content, ENT_COMPAT, $charset);
// set the path to pictures to absolute (so that it can be modified in fckeditor)
$content = preg_replace("|src=\"([^\"]*)|i", "src=\"".api_get_path(REL_COURSE_PATH).$_course['path'].'/document'.$this->created_dir."/\\1", $content);
list($header, $body) = explode('<BODY',$content);
$body = '<BODY'.$body;
// remove font-family styles
$header = preg_replace("|font\-family[^;]*;|i", "",$header);
// dokeos styles
$my_style = api_get_setting('stylesheets');
if(empty($my_style)){$my_style = 'dokeos_classic';}
$style_to_import = "<style type=\"text/css\">\r\n";
$style_to_import .= '@import "'.api_get_path(WEB_CODE_PATH).'css/'.$my_style.'/default.css";'."\n";
$style_to_import .= '@import "'.api_get_path(WEB_CODE_PATH).'css/'.$my_style.'/course.css";'."\n";
$style_to_import .= "</style>\r\n";
$header = preg_replace("|</head>|i", "\r\n$style_to_import\r\n\\0",$header);
// line break before and after picture
$header = str_replace('p {','p {clear:both;',$header);
$header = str_replace('absolute','relative',$header);
switch($this->split_steps)
{
case 'per_page' : $this -> dealPerPage($header,$body); break;
case 'per_chapter' : $this -> dealPerChapter($header,$body); break;
}
}
/**
* Manages chapter splitting
* @param string Chapter header
* @param string Content
* @return void
*/
function dealPerChapter($header, $content)
{
global $_course;
$content = str_replace('||page_break||','',$content);
// get all the h1
preg_match_all("|<h1[^>]*>([^(h1)+]*)</h1>|is",$content,$matches_temp);
//empty the fake chapters
$new_index = 0;
for ($i=0 ; $i<count($matches_temp[0]) ; $i++) {
if(trim($matches_temp[1][$i])!=='')
{
$matches[0][$new_index] = $matches_temp[0][$i];
$matches[1][$new_index] = $matches_temp[1][$i];
$new_index++;
}
}
// add intro item
$intro_content = substr($content, 0, strpos($content, $matches[0][0]));
$items_to_create[get_lang('Introduction')] = $intro_content;
for ($i=0 ; $i<count($matches[0]) ; $i++) {
if(empty($matches[1][$i]))
continue;
$content = strstr($content,$matches[0][$i]);
if($i+1!==count($matches[0]))
{
$chapter_content = substr($content, 0, strpos($content, $matches[0][$i+1]));
}
else
{
$chapter_content = $content;
}
$items_to_create[$matches[1][$i]] = $chapter_content;
}
$i = 0;
foreach($items_to_create as $item_title=>$item_content)
{
$i++;
$page_content = $this->format_page_content($header, $item_content);
$html_file = $this->created_dir.'-'.$i.'.html';
$handle = fopen($this->base_work_dir.$this->created_dir.'/'.$html_file,'w+');
fwrite($handle, $page_content);
fclose($handle);
$document_id = add_document($_course,$this->created_dir.'/'.$html_file,'file',filesize($this->base_work_dir.$this->created_dir.'/'.$html_file),$html_file);
if ($document_id){
//put the document in item_property update
api_item_property_update($_course,TOOL_DOCUMENT,$document_id,'DocumentAdded',$_SESSION['_uid'],0,0,null,null,api_get_session_id());
$infos = pathinfo($this->filepath);
$slide_name = strip_tags(nl2br($item_title));
$slide_name = str_replace(array("\r\n", "\r", "\n"), "", $slide_name);
$slide_name = html_entity_decode($slide_name);
$previous = learnpath::add_item(0, $previous, 'document', $document_id, $slide_name, '');
if($this->first_item == 0){
$this->first_item = $previous;
}
}
}
}
/**
* Manages page splitting
* @param string Page header
* @param string Page body
* @return void
*/
function dealPerPage($header,$body)
{
global $_course;
// split document to pages
$pages = explode('||page_break||',$body);
$first_item = 0;
foreach($pages as $key=>$page_content)
{ // for every pages, we create a new file
$key +=1;
$page_content = $this->format_page_content($header, $page_content, $this->base_work_dir.$this->created_dir);
$html_file = $this->created_dir.'-'.$key.'.html';
$handle = fopen($this->base_work_dir.$this->created_dir.'/'.$html_file,'w+');
fwrite($handle, $page_content);
fclose($handle);
$document_id = add_document($_course,$this->created_dir.$html_file,'file',filesize($this->base_work_dir.$this->created_dir.$html_file),$html_file);
$slide_name = '';
if ($document_id) {
//put the document in item_property update
api_item_property_update($_course,TOOL_DOCUMENT,$document_id,'DocumentAdded',$_SESSION['_uid'],0,0,null,null,api_get_session_id());
$infos = pathinfo($this->filepath);
$slide_name = 'Page '.str_repeat('0',2-strlen($key)).$key;
$previous = learnpath::add_item(0, $previous, 'document', $document_id, $slide_name, '');
if($this->first_item == 0) {
$this->first_item = $previous;
}
// code for text indexing
if (api_get_setting('search_enabled')=='true') {
if (isset($_POST['index_document']) && $_POST['index_document']) {
//Display::display_normal_message(print_r($_POST));
$di = new DokeosIndexer();
isset($_POST['language'])? $lang=Database::escape_string($_POST['language']): $lang = 'english';
$di->connectDb(NULL, NULL, $lang);
$ic_slide = new IndexableChunk();
$ic_slide->addValue("title", $slide_name);
$specific_fields = get_specific_field_list();
$all_specific_terms = '';
foreach ($specific_fields as $specific_field) {
if (isset($_REQUEST[$specific_field['code']])) {
$sterms = trim($_REQUEST[$specific_field['code']]);
$all_specific_terms .= ' '. $sterms;
if (!empty($sterms)) {
$sterms = explode(',', $sterms);
foreach ($sterms as $sterm) {
$ic_slide->addTerm(trim($sterm), $specific_field['code']);
}
}
}
}
$page_content = $all_specific_terms .' '. $page_content;
$ic_slide->addValue("content", $page_content);
// add a comment to say terms separated by commas
$courseid=api_get_course_id();
$ic_slide->addCourseId($courseid);
$ic_slide->addToolId(TOOL_LEARNPATH);
$lp_id = $this->lp_id;
$xapian_data = array(
SE_COURSE_ID => $courseid,
SE_TOOL_ID => TOOL_LEARNPATH,
SE_DATA => array('lp_id' => $lp_id, 'lp_item'=> $previous, 'document_id' => $document_id),
SE_USER => (int)api_get_user_id(),
);
$ic_slide->xapian_data = serialize($xapian_data);
$di->addChunk($ic_slide);
//index and return search engine document id
$did = $di->index();
if ($did) {
// save it to db
$tbl_se_ref = Database::get_main_table(TABLE_MAIN_SEARCH_ENGINE_REF);
$sql = 'INSERT INTO %s (id, course_code, tool_id, ref_id_high_level, ref_id_second_level, search_did)
VALUES (NULL , \'%s\', \'%s\', %s, %s, %s)';
$sql = sprintf($sql, $tbl_se_ref, api_get_course_id(), TOOL_LEARNPATH, $lp_id, $previous, $did);
Database::query($sql);
}
}
}
}
}
}
/**
* Returns additional Java command parameters
* @return string The additional parameters to be used in the Java call
*/
function add_command_parameters(){
return ' -d woogie "'.$this->base_work_dir.'/'.$this->file_path.'" "'.$this->base_work_dir.$this->created_dir.'/'.$this->file_name.'.html"';
}
/**
* Formats a page content by reorganising the HTML code a little
* @param string Page header
* @param string Page content
* @return string Formatted page content
*/
function format_page_content($header, $content)
{
// limit the width of the doc
list($max_width, $max_height) = explode('x',api_get_setting('service_ppt2lp','size'));
$content = preg_replace("|<body[^>]*>|i","\\0\r\n<div style=\"width:".$max_width."\">",$content, -1,$count);
if($count < 1)
{
$content = '<body><div style="width:'.$max_width.'">'.$content;
}
$content = preg_replace('|</body>|i','</div>\\0',$content, -1, $count);
if($count < 1)
{
$content = $content.'</div></body>';
}
// add the headers
$content = $header.$content;
// resize all the picture to the max_width-10
preg_match_all("|<img[^src]*src=\"([^\"]*)\"[^>]*>|i",$content,$images);
foreach ($images[1] as $key => $image)
{
// check if the <img tag soon has a width attribute
$defined_width = preg_match("|width=([^\s]*)|i",$images[0][$key], $img_width);
$img_width = $img_width[1];
if(!$defined_width)
{
list($img_width, $img_height, $type) = getimagesize($this->base_work_dir.$this->created_dir.'/'.$image);
$new_width = $max_width-10;
if($img_width > $new_width)
{
$picture_resized = str_ireplace('<img','<img width="'.$new_width.'" ',$images[0][$key]);
$content = str_replace($images[0][$key],$picture_resized,$content);
}
}
else if($img_width > $max_width-10)
{
$picture_resized = str_ireplace('width='.$img_width,'width="'.($max_width-10).'"',$images[0][$key]);
$content = str_replace($images[0][$key],$picture_resized,$content);
}
}
return $content;
}
/**
* Add documents to the visioconference (to be implemented)
*/
function add_docs_to_visio (){
}
}
?>